Its a fevered dream among superhero fans.

The comic books have already seen the characters in dual adventures, dating as far back as the 1970s.

Not to mention the Avengers and Justice League of America team-ups.

DC/Marvel

Batman (4th R) Spider-man (2nd L) and Superman (front L) pose for photosJAY DIRECTO/AFP via Getty Images

Such a long tradition seems ripe for filmdoms exploitation.

However, Thats many years away, though.

I think we have to establish what were doing [at DC] first.

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I would be lying to say that we havent discussed it.

But all discussions have been very, very light and fun.

Gunns last Marvel project commitment,Guardians Of The Galaxy Vol.

3, opens in theaters on May 5.